From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C517AC433DF for ; Fri, 21 Aug 2020 22:45:27 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 7C7BF207CD for ; Fri, 21 Aug 2020 22:45:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="ZLLicUE0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7C7BF207CD Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id EC8928D0090; Fri, 21 Aug 2020 18:45:26 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id E77C08D004C; Fri, 21 Aug 2020 18:45:26 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id D90F48D0090; Fri, 21 Aug 2020 18:45:26 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0198.hostedemail.com [216.40.44.198]) by kanga.kvack.org (Postfix) with ESMTP id C3FA88D004C for ; Fri, 21 Aug 2020 18:45:26 -0400 (EDT) Received: from smtpin12.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 8922D3642 for ; Fri, 21 Aug 2020 22:45:26 +0000 (UTC) X-FDA: 77176058652.12.rod50_040c5112703c Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin12.hostedemail.com (Postfix) with ESMTP id 5A1981801C9AC for ; Fri, 21 Aug 2020 22:45:26 +0000 (UTC) X-HE-Tag: rod50_040c5112703c X-Filterd-Recvd-Size: 2889 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) by imf12.hostedemail.com (Postfix) with ESMTP for ; Fri, 21 Aug 2020 22:45:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Type:MIME-Version:Message-ID: Subject:To:From:Date:Sender:Reply-To:Cc:Content-Transfer-Encoding:Content-ID: Content-Description:In-Reply-To:References; bh=LfI/OrzE1eBdqL3okL2YqXp0meafLH7tI15of/K2lE0=; b=ZLLicUE0LXy5ygDPQ600jwapxE ntnYFz9WnnkqfIwwuEhmTF+f9vh9UMaifQSEswH6deeDHwu5k7fNlyhAIUHDuGcsr6FZ5N9pWFyWJ jacc3CKKFXCfV17LDEzxdAGXz7lRoaHNX77thOOT2xZiTwY7iX6jY33McKUcEKA+3WBu23uDc7nql utKtmIMlPcYxxWRBqAhHEFn+WDuyski6M19v+7lJdkYlYgSEh+KeMR+YlbTQq4K7IBmPlFlMdbboe VHiYKMJ13v1jkicupFxmvKxEouwtnklxTgVLVmwRc/1up5RKS8tsLWiOXB/OkRxZUm9spH4SkCvgE M9dODXFg==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1k9Fmk-0008SE-Rj; Fri, 21 Aug 2020 22:45:22 +0000 Date: Fri, 21 Aug 2020 23:45:22 +0100 From: Matthew Wilcox To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/78] Transparent Huge Pages for XFS Message-ID: <20200821224522.GX17456@casper.infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Rspamd-Queue-Id: 5A1981801C9AC X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000007, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: ... just kidding. Nobody's going to review 78 patches. Here's a git tree instead: http://git.infradead.org/users/willy/pagecache.git I do want people to know that the THP patchset now passes xfstests. I'm sending out portions of the patchset as individual series and trying to get at least some of these patches merged for 5.10. https://lore.kernel.org/linux-mm/20200819150555.31669-1-willy@infradead.org/ https://lore.kernel.org/linux-mm/20200819184850.24779-1-willy@infradead.org/ https://lore.kernel.org/linux-block/20200817195206.15172-1-willy@infradead.org/ https://lore.kernel.org/linux-mm/20200804161755.10100-1-willy@infradead.org/ https://lore.kernel.org/linux-mm/20200629152033.16175-1-willy@infradead.org/ I would like people to run their workloads against the git tree and provide some performance numbers. The biggest part of this patchset is supporting variable-sized THPs. So far, all THPs have been PMD sized, and filesystems would prefer a page size somewhere between PAGE_SIZE and PMD_SIZE. Using the readahead code, we increase the page size as we increase the size of readaheads. This patch set does not attempt to allocate larger pages on writes. That's a future enhancement. There is also no support for larger pages on filesystems other than XFS. I have plans to add support for NFS, but I don't plan to add support for buffer heads. Think of this as an incentive to convert to using the iomap infrastructure for buffered I/O ;-)